diff --git a/Endpoints/BackupEndpoint.cs b/Endpoints/BackupEndpoint.cs
index f5b8f15..dd257e4 100644
--- a/Endpoints/BackupEndpoint.cs
+++ b/Endpoints/BackupEndpoint.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Diagnostics;
 using System.IO;
+using System.Linq;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Routing;
@@ -28,13 +29,23 @@ public static class BackupEndpoint
         var archiveName = $"gott-{timestamp}.tar.gz";
         var archivePath = Path.Combine(backupDir, archiveName);
 
+        var entries = Directory.GetFileSystemEntries(dataDir)
+            .Select(e => Path.GetFileName(e))
+            .Where(e => e != "backup")
+            .ToArray();
+
         var psi = new ProcessStartInfo
         {
             FileName = "tar",
-            ArgumentList = { "-czf", archivePath, "--exclude=backup", "-C", dataDir, "." },
             RedirectStandardError = true,
             UseShellExecute = false
         };
+        psi.ArgumentList.Add("-czf");
+        psi.ArgumentList.Add(archivePath);
+        psi.ArgumentList.Add("-C");
+        psi.ArgumentList.Add(dataDir);
+        foreach (var entry in entries)
+            psi.ArgumentList.Add(entry);
 
         using (var process = Process.Start(psi))
         {